Watts SOCLA BA BM, Руководство по установке

Страница: 7 / 64

7
EN
3.4 Repair kits
Repair kits are available and make it possible to replace the specific defective part on the BA backflow preventer. The kit consists
of: one upstream valve assembly (1), one downstream valve assembly (2), one relief valve assembly (3).
3
2
1
L2
Ø
D
H1
H3
H2
W
L1
Backfl ow
preventer
part no.
DN D V L1 L2 H1 H2 H3 W L
Replace-
ment
part no.
mm ‘‘ mm mm mm mm mm mm mm kg
149B7000 15 1/2 32 122 201 168.5 103 65.5 53 1.2 149B1391
149B7001 20 3/4 32 122 201 168.5 103 65.5 53 1.2 149B1391
149B7002
25 1 40 157 252 238 156 82 76 2.7
149B1393
149B7003 32 1 1/4 40 157 252 238 156 82 76 2.7 149B1393
149B7004 40 1 1/2 50 220 336 303.5 202.5 101 115 6.5 149B1395
149B7005 50 2 50 220 336 303.5 202.5 101 115 6.5 149B1395
L2
Ø
D
H1
H3
H2
W
L1
4. Troubleshooting
PROBLEM POSSIBLE CAUSE ACTION
1. Rapid discharge of water through the
relief valve followed by normal operation Pressure fl uctuation in the upstream
water supply network
None
2. Continuous discharge of water
through the relief valve in the course of
normal operation
The relief valve is dirty or damaged Clean or replace the relief valve module
3. Continuous discharge of water
through the relief valve in safe mode
(normal fl ow or no fl ow)
a. The upstream valve is dirty or
damaged
b. The piston seal of the relief valve is
dirty or damaged
c. The downstream valve is dirty or
damaged
a. Clean or replace the upstream valve
b. Clean or replace the relief valve
module
c. Clean or replace the downstream
valve